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CERN Document Server 6 ჩანაწერია ნაპოვნი  ძიებას დასჭირდა 0.52 წამი. 
1.
Colour-Octet Effects in Radiative $\Upsilon$ Decays / Maltoni, Fabio (CERN) ; Petrelli, Andrea (Argonne)
We investigate the effects of colour-octet contributions to the radiative framework. Photons coming both from the coupling to hard processes (`direct') and by collinear emission from light quarks (`fragmentation') are consistently included at next-to-leading order (NLO) in $\alpha_s$. [...]
hep-ph/9806455; CERN-TH-98-152; ANL-HEP-PR-98-44; CERN-TH-98-152; ANL-HEP-PR-98-44.- Geneva : CERN, 1999 - 25 p. - Published in : Phys. Rev. D 59 (1999) 074006 APS Published version, local copy: PDF; Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ph/9806455 PDF - Please contact the library if you need to access this document.
2.
Quarkonium Photoproduction at Next-to-leading Order / Maltoni, Fabio (CERN) ; Mangano, Michelangelo L. (CERN) ; Petrelli, Andrea (INFN, Pisa)
We present the calculation of O(as^2 aem) corrections to heavy-quarkonium total photoproduction cross-sections. Results are given for the colour-octet component of S and P waves. [...]
hep-ph/9708349; CERN-TH-97-202; CERN-TH-97-202.- Geneva : CERN, 1998 - 32 p. - Published in : Nucl. Phys. B 519 (1998) 361-393 Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ph/9708349 PDF - CERN library copies
3.
NLO Production and Decay of Quarkonium / Petrelli, Andrea (INFN, Pisa) ; Cacciari, Matteo (DESY) ; Greco, Mario (Rome III U. ; Frascati) ; Maltoni, Fabio (CERN) ; Mangano, Michelangelo L. (CERN)
We present a calculation of next-to-leading-order (NLO) QCD corrections to total hadronic production cross sections and to light-hadron-decay rates of heavy quarkonium states. Both colour-singlet and colour-octet contributions are included. [...]
hep-ph/9707223; CERN-TH-97-142; DESY-97-090; CERN-TH-97-142; DESY-97-090.- Geneva : CERN, 1998 - 63 p. - Published in : Nucl. Phys. B 514 (1998) 245-309 Access to fulltext document: PDF; External link: hep-ph/9707223 PDF - Please contact the library if you need to access this document.
4.
NLO Quarkonium Production in Hadronic Collisions / Mangano, Michelangelo L. (CERN) ; Petrelli, Andrea (CERN)
We present some preliminary results on the next-to-leading order calculation in QCD of quarkonium production cross sections in hadronic collisions. We will show that the NLO total cross sections for $P$-wave states produced at high energy are not reliable, due to the appearance of very large and negative contributions. [...]
hep-ph/9610364; CERN-TH-96-293; CERN-TH-96-293.- Geneva : CERN, 1996 - 11 p.

Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ph/9610364 PDF
In : UIC Workshop on Quarkonium Physics, Chicago, IL, USA, 13 - 15 Jun 1996, pp.3887-3897 - Please contact the library if you need to access this document.
5.
Colour-octet NLO QCD corrections to hadronic $\chi_{J}$ decays / Petrelli, Andrea (CERN ; Pisa U. ; INFN, Pisa)
In this paper we present a complete next-to-leading order QCD calculation of the $\chi_J$ ($~3P_J\; ;J=0,1,2$) hadronic decay width. We include the NLO colour-octet contribution, as defined in the Bodwin, Braaten and Lepage formalism. [...]
hep-ph/9603439; CERN-TH-96-84; CERN-TH-96-084.- Geneva : CERN, 1996 - 12 p. - Published in : Phys. Lett. B 380 (1996) 159-164 Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ph/9603439 PDF - Please contact the library if you need to access this document.
6.
Charmonium production at the Tevatron / Cacciari, Matteo (INFN, Pavia ; Pavia U.) ; Greco, Mario (Rome III U. ; Frascati) ; Mangano, Michelangelo L. (CERN) ; Petrelli, Andrea (INFN, Pisa ; Pisa U.)
We present in this work a study of large-\pt\ charmonium production in hadronic collisions. We work in the framework of the factorization model of Bodwin Braaten and Lepage, thereby including the color octet production mechanism, and extract the values of the necessary nonperturbative parameters from a comparison with the most recent data from the Fermilab 1.8 TeV $p\bar p$ hadron collider. [...]
hep-ph/9505379; CERN-TH-95-129; FNT-T-95-17; IFUP-TH-25-95; CERN-TH-95-129; FNT-T-95-17; IFUP-TH-95-25.- Geneva : CERN, 1995 - 12 p. - Published in : Phys. Lett. B 356 (1995) 553-560 Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ph/9505379 PDF - Please contact the library if you need to access this document.

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